Results 21 to 30 of about 210,774 (257)

Comparative Evaluation of the Shaping Ability of Five Different Nickel-Titanium Rotary File Systems in Simulated Canals

open access: yesCumhuriyet Dental Journal, 2022
Objectives: The aim of this study was to compare the simulated canal shaping efficiencies of five different NiTi rotary file systems. Materials and Methods: In the study, 100 transparent resin blocks with J-shaped canals were randomly divided into five ...
Demet Altunbaş, Ömer Bilgin
doaj   +1 more source

Evaluation of Nickel and Chromium Ion Release from Stainless Steel, HANT and NiTi Arch Wires in Two 28-day Time Spans [PDF]

open access: yesIranian Journal of Orthodontics, 2015
Background: Stainless steel and Nickel Chromium alloys show special mechanical features, which has made them the most common materials for fabrication of orthodontic arch wires.
Sepideh Arab   +4 more
doaj   +1 more source

A method to determine the accuracy of shape setting thin, spirally shaped Nitinol wires

open access: yesCurrent Directions in Biomedical Engineering, 2021
Electric stimulation of the auditory nerve using a cochlear implant (CI) is presumed to be superior when the electrode array (EA) is placed close to the inner wall of the cochlea. Nitinol is investigated as an actuator that enables an intracochlear shape
Ehmann Tim   +3 more
doaj   +1 more source

Role of the flat-designed surface in improving the cyclic fatigue resistance of endodontic NiTi rotary instruments [PDF]

open access: yes, 2019
The aim of this study was to investigate the role of the flat-designed surface in improving the resistance to cyclic fatigue by comparing heat-treated F-One (Fanta Dental, Shanghai, China) nickel-titanium (NiTi) rotary instruments and similar prototypes,
D'Angelo, M.   +8 more
core   +1 more source

In vitro corrosion behaviour of phenolic coated nickel–titanium surfaces

open access: yesBiosurface and Biotribology, 2019
The biocompatibility of implantable nickel–titanium biomaterials relies on the quality of their surfaces. In this study, nickel–titanium surfaces are coated with phenolic thin films of tannic acid and pyrogallol with the purpose of studying their ...
Simon Longela, Athanasios Chatzitakis
doaj   +1 more source

Energy absorption capacity of NiTi lattice structure (1st report: Evaluation of stiffness and strength of the structure by considering the effective length of the strand)

open access: yesNihon Kikai Gakkai ronbunshu
In this study, a method for evaluating the mechanical properties, specifically the initial stiffness and martensitic transformation onset stress, of NiTi lattice structures, Body Centered Cubic (BCC) and Rhombic Dodecahedral (RD) structures, under ...
Yuji ATAGO   +2 more
doaj   +1 more source

Thermodynamic Investigation of Propagating Behavior in SHS for Equiatomic and Non-Equiatomic NiTi Alloys Using Factsage Software [PDF]

open access: yesArchives of Metallurgy and Materials
In the current work, the thermodynamic properties of equiatomic and non-equiatomic Ni-Ti were estimated using Factsage Software for the “self-propagating high temperature synthesis (SHS) method.
B. Keskin, B. Derin
doaj   +1 more source

Comparative Assessment of Canal Transportation and Centering Ability of Reciproc and One Shape File Systems Using CBCT-An In Vitro Study [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2017
Introduction: Root canal preparation leads to deviation of the canal anatomy causing canal transportation which affects the success of the treatment. Cone Beam Computed Tomography (CBCT) is a non invasive imaging technique to analyse the shape of the
Anika Mittal   +7 more
doaj   +1 more source

Lattice instabilities of cubic NiTi from first principles [PDF]

open access: yes, 2001
The phonon dispersion relation of NiTi in the simple cubic B2 structure is computed using first-principles density-functional perturbation theory with pseudopotentials and a plane-wave basis set.
A. DalCorso   +28 more
core   +1 more source

Comparative Assessment of Wire Deformation, Breakage, Frictional Resistance, and Patient Discomfort in Orthodontic Archwires: A Clinical Study

open access: yesJournal of Pharmacy and Bioallied Sciences
Background: Orthodontic archwires’ characteristics are known to have an effect on the effectiveness, duration, and comfort of orthodontic treatment. Despite the widespread use of nickel-titanium (NiTi), SS, and TMA wires, comparative testing on wear ...
Radhika Nair
doaj   +1 more source

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